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3 years ago

If room temperature is 300K, is Gallium a solid, liquid, or gas?

Chemistry

1 answer:

disa [49]3 years ago

6 0

Answer:

Gallium is solid at 300K

Explanation:

X °C = 300 kelvin - 273.15 = 26.85 ° C

To know if Gallium is solid, liquid or gas; we should know the melting point of Gallium.

The melting point of gallium is 29.76 °C, which is 3 °C higher than the current temperature. This means it hasn't melted yet. So at 300 Kelvin, it is still solid. But the melting temperature is slightly above room temperature.

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A bubble of helium gas has a volume of 0.650 cm3 near the bottom of a large aquarium where the pressure is 1.54 atm and the temp

aleksandrvk [35]

Answer:

1.005 cm³

Explanation:

Using Ideal gas equation for same mole of gas as

$\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}$

Given ,

V₁ = 0.650 cm³

V₂ = ?

P₁ = 1.54 atm

P₂ = 1.01 atm

T₁ = 12°C

T₂ = 16 ºC

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T₁ = (12 + 273.15) K = 285.15 K

T₂ = (16 + 273.15) K = 289.15 K

Using above equation as:

$\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}$

$\frac {{1.54}\times {0.650}}{285.15}=\frac {{1.01}\times {V_2}}{289.15}$

Solving for V₂ , we get:

3 0

3 years ago

How does the mass of 1 mole of Carbon compare to the mass of 1 mole of Magnesium?

Flauer [41]

Answer:

B one mole of carbon is lighter than one mole of magnesium

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4 years ago

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babunello [35]

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4 years ago

What is the symbol of the element that has the electron configuration 1s22s22p63s23p64s23d5?

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